Repeating mechanism for phonographs.



No. 767,843. I PATENTED AUG. 9, 1904 H. P. HUSE. REPEATING MECHANISM FOR PHONOGRAPHS.

APPLIOATION FILED DEC. 4, 1903.

N0 MODEL.

UNITED STATES Patented August 9, 1904:.

PATENT OFFICE.

HARRY P. HUSE, OF THE UNITED STATES NAVY, ASSIGNOR TO UNITED STATES SCHOOL OF LANGUAGES, OF WILMINGTON, DELAWARE, A

CORPORATION OF DELAWARE.

REPEATING MECHANISM FOR PHONOGRAPHS.

SPECIFICATION forming part of Letters Patent No. 767,343, dated August 9, 1904. Application filed December 4,1903. Serial No. 183,779. (No model.)

To all whom, it may concern.-

Beit known that I, HARRY P. Home, of the United States Navy, temporarily residing at Naval Academy, Annapolis, Maryland, have invented a certain new and useful Improvement in Repeating Mechanisms for Phonographs, of which the following is a full, clear, and exact description.

The object of this invention is to provide means for repeating any portion, especially any portion less than the whole, of a soundrecord on a disk phonograph.

The invention consists of a repeating mechanism for phonographs comprising an eccentrically-arranged bar screw-threaded or otherwise constructed to engage a tractive projection on the sound-box arm and move said arm laterally, as I will proceed now more particularly to set forth and finally claim.

In the accompanying drawings, illustrating the invention, in the several figures of which like parts are similarly designated, Figure 1 is a side elevation of a phonograph supplied with the attachment of the present invention. Fig. 2 is an end view of the attachment. Fig. 3 is a side view thereof. Fig. I is a side view of a slightly-different form of part of the at tachment.

The box 1, the rotating record or sound disk 2, the sound-box 3 and its stylus 4:, the sound-box arm 5, and the swivel connection 6 of said sound-box arm, with its supportingbracket 7, may be of usual or any approved construction. Adjacent the bracket 7 and preferably by means of its fastening-screws there is applied to the box 1 a bracket 8, having ears 9, in which is journaled the bar 10, provided with a fine screw-thread and having a turning device, such as a milled head 11. This bar is mounted eccentrically in the ears 9, and its shortest radius is normally presented upward by means of the drag of the spring 12 on an eccentric connection, disk, crank, or other equivalent device 13, applied to one end of the said bar.

1 1 is a clamp of suitable construction to embrace Whatever form of arm 5 may be employed, and in Figs. 1, 2, and 3 this arm is shown as rectangular in cross-section, while in Fig. 4 it is shown as tubular, and, as already stated, the clamp 14 is conformed to the shape of the arm. In the lower portion of this clamp is placed a piece of tractive material 15, such as leather or rawhide.

The sound-box, through its stylus, travels over the rotating sound-record disk 2 in the usual way. The normal position of the bar 10 takes it out of contact with the tractive material 15, and consequently the sound-box and its stylus are free to be carried by the rotating sound-disk; but if it be desired to repeat any portion of the record, especially any portion less than the whole, and to repeat it any number of times the bar 10 is rotated so as to bring a portion of its surface of greater radius upward and into contact with the tractive material, and thereby to lift the arm 5 until its stylus is free from the sound-groove, when upon further rotation of the bar the sound-box arm will be moved laterally in a reverse direction from what it is given by the travel of its stylus in the sound-groove. The tractive material under the weight of the arm engages the screw-thread in the bar, and the rotary motion of the bar is converted into a lateral motion of the arm.

By the term screw-threaded as herein used I mean to include equivalent mediums by which the bar 10 will act upon the projection of the sound-box arm to move said arm laterally, as described.

, The tractive device may have a straight contact edge, as shown in Figs. 1, 2, and 3, or such edge may be inclined, as shown in Fig. 4. With a given shaft the extent of setback of the sound-box arm may be controlled within limits by bringing the tractive device nearer the shaft, so that as the shaft is turned it engages sooner the said tractive device, and thus brings to bear a longer are of the thread in one turn, and hence lifts and displaces the stylus a greater distance. The tractive device with the slanting or inclined edge insures the longer lateral movement of the arm.

While this lateral motion of the arm is being effected the record-disk may continue to revolve.

The special Value ofthe mechanism of the present invention is found in its adaptability to repeating Words or phrases over and over again in teaching languages by means of the phonograph or so-called talking-machine.

WV hat I claim is- 1. A repeating mechanism for phonographs, comprising an eccentrically-mounted screwthreaded bar, and a tractive device applied to the sound-box arm and adapted to cooperate With said bar.

2-. The combination With a phonograph-box, of a bracket, a screw-threaded bar eccentrically mounted in said bracket and adapted to be rotated therein, a sound-box arm, and a tractive device applied to said arm over said eccentric bar.

3. The combination With a phonograph-box, of a bracket, a screw-threaded bar eccentrically mounted in said bracket and adapted to be rotated therein, a sound-box arm, a tractive device applied to said arm over said eccentric bar, and means to normally hold said eccentric bar with its surface of less radius uppermost and out of contact With the tractive device.

4. A repeating mechanism for phonographs, comprising an eccentrically-mounted screwthreaded bar, and a tractive device having a slanting contact-surface applied to the soundboX arm and adapted to cooperate With said bar.

5. A repeating mechanism for phonographs, comprising an eccentrically-mounted screwthreaded bar, and a tractive device adjustably applied to the sound-box arm and adapted to cooperate with said bar.

In testimony whereof I have hereunto set my hand this 30th day of November, A. D. 1903.

HARRY P. HUSE.

Vitnesses:

TI'IATOHER CLARK, NANNIE S. S'rooKE'r'r. 

